Text this: Insecticidal, Repellent and Antifeedant Activity of Essential Oils from <i>Blepharocalyx cruckshanksii</i> (Hook. & Arn.) Nied. Leaves and <i>Pilgerodendron uviferum</i> (D. Don) Florin Heartwood against Horn Flies, <i>Haematobia irritans</i> (Diptera: Muscidae)